Floristic composition and frequency index of species of herbal cover under the tree canopy of 30-years spruce cultures in the Middle Urals

The results of studies of the species composition of the grass cover with a tree canopy density of 0.3 - 0.7 in areas of 30-year-old spruce cultures planted in the types of herbs and green mosses spruce forest and berry spruce-pine forest were given. The materials of study showed that the species composition was more numerous in the first type of forest, 91 species of the vascular herbaceous plants belonging to 34 families, 72 genera were noted; in the second type of forest - 63 species belonging to 32 families and 57 genera. The species of the herbaceous plants of rather small frequency (their shares were 70 and 57%) prevailed. At the same time, in both types of forests 42 species of the same herbaceous plants were found. The majority of the studied herbaceous plants in both types of forests were mesophytes (77 and 95%), the proportion of hygrophytes was higher in the spruce forest of herbs and green mosses. Of the total number of species noted in these types of forests, 85 species were medicinal and 4 species were rare for the Sverdlovsk region.